Contiguous energy

What is (are) the technical term(s) for the type of energy that 6, 8 or 10 nucleotides share in common ? I have consulted the directory, it apparently is not the “neck area”.
Excuse me for my temporary ignorance.

A sequence of adjacent bonded pairs is often called a stack, stem or string. The neck is a distinguished stack.

See the EteRNA Dictionary for more definitions.